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31 lines
715 B
Python
31 lines
715 B
Python
"""Utilities for interacting with the file systems."""
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from typing import (
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Union,
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)
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import gcsfs
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from fsspec.implementations.local import (
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LocalFileSystem,
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)
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GCS_FS = gcsfs.GCSFileSystem(cache_timeout=-1)
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LOCAL_FS = LocalFileSystem()
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def infer_fs(path: str) -> Union[LocalFileSystem, gcsfs.core.GCSFileSystem, NotImplementedError]:
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if path.startswith("gs://"):
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return GCS_FS
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elif path.startswith("hdfs://"):
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# We can probably use pyarrow HDFS to support this.
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raise NotImplementedError("HDFS not yet supported")
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else:
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return LOCAL_FS
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def is_local_fs(fs: LocalFileSystem) -> bool:
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return fs == LOCAL_FS
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def is_gcs_fs(fs: gcsfs.core.GCSFileSystem) -> bool:
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return fs == GCS_FS
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